Investigation of a Large Volume Multi-Pair Coplanar Grid CdZnTe Detector for Improved Detection Efficiency

Author

He, Zhong ; Sturm, Benjamin W. ; Rhodes, Edgar

Author_Institution

Michigan Univ., Ann Arbor, MI

Volume

2

fYear

2005

fDate

23-29 Oct. 2005

Firstpage

1159

Lastpage

1162

Abstract

A novel CdZnTe gamma-ray detector was designed and fabricated using a multi-pair coplanar grid anode geometry. This new design consists of 4 independent coplanar grid electrode pairs surrounded by a single boundary electrode on each face of a 30 mm times30.5 mm times12 mm CdZnTe crystal, which is the largest coplanar grid CdZnTe detector ever reported. The purpose of this new large volume design is to improve the detection efficiency from previous generation coplanar grid CdZnTe detectors while maintaining the excellent energy resolution achieved. Employing the depth sensing method for electron trapping compensation, measurements of the spectral performance as a function of interaction depth are reported. In addition, measurements of the mu _etau_ewill be reported

Keywords

electrodes; gamma-ray apparatus; gamma-ray detection; semiconductor counters; CdZnTe gamma-ray detector; depth sensing method; detection efficiency; electron trapping compensation; independent coplanar grid electrode pairs; interaction depth; multipair coplanar grid CdZnTe detector; multipair coplanar grid anode geometry; single boundary electrode; spectral performance; Anodes; Electrodes; Electron traps; Energy resolution; Face detection; Gamma ray detection; Gamma ray detectors; Helium; Radiation detectors; Telephony;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2005 IEEE

Conference_Location

Fajardo

ISSN

1095-7863

Print_ISBN

0-7803-9221-3

Type

conf

DOI

10.1109/NSSMIC.2005.1596456

Filename

1596456